1 /* Test program for dwfl_module_return_value_location. 2 Copyright (C) 2005 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 5 Red Hat elfutils is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by the 7 Free Software Foundation; version 2 of the License. 8 9 Red Hat elfutils is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 General Public License for more details. 13 14 You should have received a copy of the GNU General Public License along 15 with Red Hat elfutils; if not, write to the Free Software Foundation, 16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 17 18 Red Hat elfutils is an included package of the Open Invention Network. 19 An included package of the Open Invention Network is a package for which 20 Open Invention Network licensees cross-license their patents. No patent 21 license is granted, either expressly or impliedly, by designation as an 22 included package. Should you wish to participate in the Open Invention 23 Network licensing program, please visit www.openinventionnetwork.com 24 <http://www.openinventionnetwork.com>. */ 25 26 #include <config.h> 27 #include <assert.h> 28 #include <inttypes.h> 29 #include ELFUTILS_HEADER(dwfl) 30 #include <dwarf.h> 31 #include <argp.h> 32 #include <stdio.h> 33 #include <stdio_ext.h> 34 #include <locale.h> 35 #include <stdlib.h> 36 #include <error.h> 37 #include <string.h> 38 #include <fnmatch.h> 39 40 41 struct args 42 { 43 Dwfl *dwfl; 44 Dwarf_Die *cu; 45 Dwarf_Addr dwbias; 46 char **argv; 47 }; 48 49 static int 50 handle_function (Dwarf_Die *funcdie, void *arg) 51 { 52 struct args *a = arg; 53 54 const char *name = dwarf_diename (funcdie); 55 char **argv = a->argv; 56 if (argv[0] != NULL) 57 { 58 bool match; 59 do 60 match = fnmatch (*argv, name, 0) == 0; 61 while (!match && *++argv); 62 if (!match) 63 return 0; 64 } 65 66 printf ("(%s) %s: ", dwfl_module_info (dwfl_cumodule (a->cu), NULL, 67 NULL, NULL, 68 NULL, NULL, 69 NULL, NULL), name); 70 71 const Dwarf_Op *locops; 72 int nlocops = dwfl_module_return_value_location (dwfl_cumodule (a->cu), 73 funcdie, &locops); 74 if (nlocops < 0) 75 error (EXIT_FAILURE, 0, "dwfl_module_return_value_location: %s", 76 dwfl_errmsg (-1)); 77 else if (nlocops == 0) 78 puts ("returns no value"); 79 else 80 { 81 printf ("return value location:"); 82 for (int i = 0; i < nlocops; ++i) 83 printf (" {%#x, %#" PRIx64 "}", locops[i].atom, locops[i].number); 84 puts (""); 85 } 86 87 return 0; 88 } 89 90 91 int 92 main (int argc, char *argv[]) 93 { 94 int remaining; 95 96 /* Set locale. */ 97 (void) setlocale (LC_ALL, ""); 98 99 struct args a = { .dwfl = NULL, .cu = NULL }; 100 101 (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, 102 &a.dwfl); 103 assert (a.dwfl != NULL); 104 a.argv = &argv[remaining]; 105 106 int result = 0; 107 108 while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL) 109 dwarf_getfuncs (a.cu, &handle_function, &a, 0); 110 111 dwfl_end (a.dwfl); 112 113 return result; 114 } 115
